John aubedenn



(No Model.) 4 v v J. AUREDBNN.

KNITTING MAUHINE. No. 355,047. Patented Dec. 28, 1886.

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JOHN AUREDENN, or CINCINNATI, onto.

KNlTTlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 355,04'L-dated December 28, 1886. Application filed September 18, 1886. Serial No. 213,945. (No model.)

To all .whom it may concern:

Be it known that I, JOHN AUREDENN, of Cincinnati, county of Hamilton, and State of Ohio, have invented certain new and useful Improvements in Knitting-Machines, of which the following is a specification.

My invention relates to that class of knit ting-machines having a cylinder carrying the needles surrounded by an, outer rotating cylinder, which-latter is provided with cams for raising and lowering the needles to make the stitch. The outer or rotating cylinder is usually provided with two sets of cams-one set for use when the cylinder is rotated to the right and the other set when the cylinder is rotated to the left. Each needle is provided with aproj ection,which rests on cams of the r0- tating cylinder. Then the cylinder is rotated rapidly, it sometimes happens that a needle fails to follow the proper course and jumps into the wrong groove. It is the particular object of my invention to provide means for effectually preventing the needle from leaving its proper groove.

In the accompanying drawings, Figure 1 is a perspective view of that part of a rotating cylinder provided with my improvement, which is provided with the cams for raising and lowering the needles. Fig. 2 is a top view of my improvement in position on a rotating cylinder, the top cam, F, being omitted. Figs. 3, 4, and 5 illustrate modifications of my device, the top cam, F, being omitted. Fig. 6 is a side elevation of one of the needles in use in the machine.

The rotating cylinder A is provided with a ledge, B, which extends entirely around the inside of the cylinder, except where the cams for raising and lowering the needles are placed. A projection, n, from each of the needles N, one of which is shown in Fig. 6, rests on the top of the ledge B. The piece D is attached to the cylinderAbetween the ends of the piece B. It has two rather deep notches, d d, cut in it. These notches are similar to each other in shape. Between the notches d d is a horizontal face, d located at about the same level as the top of the ledge B.

Two cams, E E, somewhat triangular in shape, are pivoted to the cylinder A at the points e and e, and hang downinto the notches d d in such position that their points 6 rest on the edge of the piece D on a level with the top of the ledge B. A double curved piece, F, is attached to the cylinder A immediately over the center of the piece D. A guide-pawl, G, is preferably secured to the cylinderAin the position shown in Fig. 1.

With the machine in operation, the cylinder A bottom of the piece F, and drops to the face d on the piece D. Thence its course is through the groove Ihetween the notch d and the lower face of the cam E, the end e of which is raised by the projection n as the latter passes onto the top of the ledge B. When the machineis reversed, the projection passes through the groove L between the piece F and the cam E, and through the groove M between the cam E and the piece D.

It sometimes happens that when the proiection n has passed through the groove H and dropped onto the face (I it bounces up into the groove L, instead of passing intothe groove I; and, similarly, after leaving the groove L, when the machine is reversed, it occasionally passes into the groove H instead of the groove M. In either case the needle is usually broken. To avoid this accident I provide pawls to close the inner end'of each of the grooves H and L. At the ends of each of the grooves H and L, I pass a wire, P, through the rotating cylinder A, the opening being large enough to allow the wire to rotate within it freely. The inner end of the wire I is bent to form the pawl P. The free end of the pawl is held against the lower face of the piece F, preferably by the means shown in Fig. 4. The outer end of the wire I? is supported in the bracket A. The wire is surrounded by aspi ral spring, 0, one end of which is attached to the wire and the other is secured to the bracket or the cylinder. The action of this spring is to keep the free end of the pawl against the face of the piece F.

In Figs. 2, 3, and5 modifications of this device are illustrated. In Fig. 2 a boss, A", is shown, through which the wire I passes. The

-wire is also provided with a long arm, P bent in the opposite direction from the pawl P, and whose weight serves to keep the pawl P in position. In the device shown in Fig. 3 the boss A is surrounded by a spiral spring, 0, one end of which is attached to the boss or to the cylinder A, and the other end to the arm P.

This spiral spring keeps the pawl P against the face of the piece F. In the device shown in Fig. 5 a single spring, 0, attached to a lug projecting from the cylinder A, serves to hold both springs in position.

The operation of the device as modified by my attachment is as follows: When the projection n from the needle meets the pawl P in its passage through the groove H, the latter is readily pushed aside, allowing the needle to pass on, when the pawl isimmediately brought back into position by the spring 0 or the arm P. The pawl P over the opposite groove L, however, remainsin piace and prevents the projection n from slipping into this latter groove, thus forcing it into its proper channel.

Similarly, when the machine is reversed, the projection 12 is unable to pass, except through the grooves L and M.

What I claim as new and of my invention, and desire to secure by Letters Patent, is-

1. In a knitting-machine, the combination of the cylinder A, ledge B, piece D, having notches d d, cams E E, piece F, and wires P, having pawls P, and means for holding the pawls P across the grooves between the cams and the piece F, substantially as and for the purposes specified.

2. In a knitting-machine, the combination of the cylinder A, ledge B, piece D, having notches d d, cams E E, piece F, and wires P, having pawls P, and springs O, substantially as and forthe purposes set forth.

JOHN AUREDENN.

Witnesses:

E. W. HARMON, IV. S. CHRISTOPHER. 

